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<pre><span class="sourceLineNo">001</span><a name="line.1"></a>
<span class="sourceLineNo">002</span>/*<a name="line.2"></a>
<span class="sourceLineNo">003</span> * Copyright (C) 2014 Archie L. Cobbs. All rights reserved.<a name="line.3"></a>
<span class="sourceLineNo">004</span> *<a name="line.4"></a>
<span class="sourceLineNo">005</span> * $Id: CompareSchemasCommand.html 842 2015-03-07 18:20:42Z archie.cobbs $<a name="line.5"></a>
<span class="sourceLineNo">006</span> */<a name="line.6"></a>
<span class="sourceLineNo">007</span><a name="line.7"></a>
<span class="sourceLineNo">008</span>package org.jsimpledb.cli.cmd;<a name="line.8"></a>
<span class="sourceLineNo">009</span><a name="line.9"></a>
<span class="sourceLineNo">010</span>import java.util.Map;<a name="line.10"></a>
<span class="sourceLineNo">011</span><a name="line.11"></a>
<span class="sourceLineNo">012</span>import org.jsimpledb.cli.CliSession;<a name="line.12"></a>
<span class="sourceLineNo">013</span>import org.jsimpledb.core.Schema;<a name="line.13"></a>
<span class="sourceLineNo">014</span>import org.jsimpledb.parse.ParseContext;<a name="line.14"></a>
<span class="sourceLineNo">015</span>import org.jsimpledb.util.Diffs;<a name="line.15"></a>
<span class="sourceLineNo">016</span><a name="line.16"></a>
<span class="sourceLineNo">017</span>@Command<a name="line.17"></a>
<span class="sourceLineNo">018</span>public class CompareSchemasCommand extends AbstractCommand {<a name="line.18"></a>
<span class="sourceLineNo">019</span><a name="line.19"></a>
<span class="sourceLineNo">020</span>    public CompareSchemasCommand() {<a name="line.20"></a>
<span class="sourceLineNo">021</span>        super("compare-schemas version1:int version2:int");<a name="line.21"></a>
<span class="sourceLineNo">022</span>    }<a name="line.22"></a>
<span class="sourceLineNo">023</span><a name="line.23"></a>
<span class="sourceLineNo">024</span>    @Override<a name="line.24"></a>
<span class="sourceLineNo">025</span>    public String getHelpSummary() {<a name="line.25"></a>
<span class="sourceLineNo">026</span>        return "Shows the differences between two schema versions recorded in the database";<a name="line.26"></a>
<span class="sourceLineNo">027</span>    }<a name="line.27"></a>
<span class="sourceLineNo">028</span><a name="line.28"></a>
<span class="sourceLineNo">029</span>    @Override<a name="line.29"></a>
<span class="sourceLineNo">030</span>    public CliSession.Action getAction(CliSession session, ParseContext ctx, boolean complete, Map&lt;String, Object&gt; params) {<a name="line.30"></a>
<span class="sourceLineNo">031</span>        final int version1 = (Integer)params.get("version1");<a name="line.31"></a>
<span class="sourceLineNo">032</span>        final int version2 = (Integer)params.get("version2");<a name="line.32"></a>
<span class="sourceLineNo">033</span>        return new CliSession.Action() {<a name="line.33"></a>
<span class="sourceLineNo">034</span>            @Override<a name="line.34"></a>
<span class="sourceLineNo">035</span>            public void run(CliSession session) throws Exception {<a name="line.35"></a>
<span class="sourceLineNo">036</span>                final Schema schema1 = session.getTransaction().getSchemas().getVersions().get(version1);<a name="line.36"></a>
<span class="sourceLineNo">037</span>                if (schema1 == null)<a name="line.37"></a>
<span class="sourceLineNo">038</span>                    session.getWriter().println("Schema version " + version1 + " " + "not found");<a name="line.38"></a>
<span class="sourceLineNo">039</span>                final Schema schema2 = session.getTransaction().getSchemas().getVersions().get(version2);<a name="line.39"></a>
<span class="sourceLineNo">040</span>                if (schema2 == null)<a name="line.40"></a>
<span class="sourceLineNo">041</span>                    session.getWriter().println("Schema version " + version2 + " " + "not found");<a name="line.41"></a>
<span class="sourceLineNo">042</span>                final Diffs diffs = schema2.getSchemaModel().differencesFrom(schema1.getSchemaModel());<a name="line.42"></a>
<span class="sourceLineNo">043</span>                if (diffs.isEmpty())<a name="line.43"></a>
<span class="sourceLineNo">044</span>                    session.getWriter().println("No differences found between schema versions " + version1 + " and " + version2);<a name="line.44"></a>
<span class="sourceLineNo">045</span>                else {<a name="line.45"></a>
<span class="sourceLineNo">046</span>                    session.getWriter().println("Found differences found between schema versions " + version1 + " and "<a name="line.46"></a>
<span class="sourceLineNo">047</span>                      + version2 + "\n" + diffs);<a name="line.47"></a>
<span class="sourceLineNo">048</span>                }<a name="line.48"></a>
<span class="sourceLineNo">049</span>            }<a name="line.49"></a>
<span class="sourceLineNo">050</span>        };<a name="line.50"></a>
<span class="sourceLineNo">051</span>    }<a name="line.51"></a>
<span class="sourceLineNo">052</span>}<a name="line.52"></a>
<span class="sourceLineNo">053</span><a name="line.53"></a>




























































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